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Diffstat (limited to 'src/test/settings_tests.cpp')
| -rw-r--r-- | src/test/settings_tests.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/test/settings_tests.cpp b/src/test/settings_tests.cpp new file mode 100644 index 0000000000..b0ee76ea6b --- /dev/null +++ b/src/test/settings_tests.cpp @@ -0,0 +1,163 @@ +// Copyright (c) 2011-2019 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <util/settings.h> + +#include <test/util.h> +#include <test/util/setup_common.h> + +#include <boost/test/unit_test.hpp> +#include <univalue.h> +#include <util/strencodings.h> +#include <vector> + +BOOST_FIXTURE_TEST_SUITE(settings_tests, BasicTestingSetup) + +//! Check settings struct contents against expected json strings. +static void CheckValues(const util::Settings& settings, const std::string& single_val, const std::string& list_val) +{ + util::SettingsValue single_value = GetSetting(settings, "section", "name", false, false); + util::SettingsValue list_value(util::SettingsValue::VARR); + for (const auto& item : GetSettingsList(settings, "section", "name", false)) { + list_value.push_back(item); + } + BOOST_CHECK_EQUAL(single_value.write().c_str(), single_val); + BOOST_CHECK_EQUAL(list_value.write().c_str(), list_val); +}; + +// Simple settings merge test case. +BOOST_AUTO_TEST_CASE(Simple) +{ + util::Settings settings; + settings.command_line_options["name"].push_back("val1"); + settings.command_line_options["name"].push_back("val2"); + settings.ro_config["section"]["name"].push_back(2); + + // The last given arg takes precedence when specified via commandline. + CheckValues(settings, R"("val2")", R"(["val1","val2",2])"); + + util::Settings settings2; + settings2.ro_config["section"]["name"].push_back("val2"); + settings2.ro_config["section"]["name"].push_back("val3"); + + // The first given arg takes precedence when specified via config file. + CheckValues(settings2, R"("val2")", R"(["val2","val3"])"); +} + +// Test different ways settings can be merged, and verify results. This test can +// be used to confirm that updates to settings code don't change behavior +// unintentionally. +struct MergeTestingSetup : public BasicTestingSetup { + //! Max number of actions to sequence together. Can decrease this when + //! debugging to make test results easier to understand. + static constexpr int MAX_ACTIONS = 3; + + enum Action { END, SET, NEGATE, SECTION_SET, SECTION_NEGATE }; + using ActionList = Action[MAX_ACTIONS]; + + //! Enumerate all possible test configurations. + template <typename Fn> + void ForEachMergeSetup(Fn&& fn) + { + ActionList arg_actions = {}; + // command_line_options do not have sections. Only iterate over SET and NEGATE + ForEachNoDup(arg_actions, SET, NEGATE, [&]{ + ActionList conf_actions = {}; + ForEachNoDup(conf_actions, SET, SECTION_NEGATE, [&]{ + for (bool force_set : {false, true}) { + for (bool ignore_default_section_config : {false, true}) { + fn(arg_actions, conf_actions, force_set, ignore_default_section_config); + } + } + }); + }); + } +}; + +// Regression test covering different ways config settings can be merged. The +// test parses and merges settings, representing the results as strings that get +// compared against an expected hash. To debug, the result strings can be dumped +// to a file (see comments below). +BOOST_FIXTURE_TEST_CASE(Merge, MergeTestingSetup) +{ + CHash256 out_sha; + FILE* out_file = nullptr; + if (const char* out_path = getenv("SETTINGS_MERGE_TEST_OUT")) { + out_file = fsbridge::fopen(out_path, "w"); + if (!out_file) throw std::system_error(errno, std::generic_category(), "fopen failed"); + } + + const std::string& network = CBaseChainParams::MAIN; + ForEachMergeSetup([&](const ActionList& arg_actions, const ActionList& conf_actions, bool force_set, + bool ignore_default_section_config) { + std::string desc; + int value_suffix = 0; + util::Settings settings; + + const std::string& name = ignore_default_section_config ? "wallet" : "server"; + auto push_values = [&](Action action, const char* value_prefix, const std::string& name_prefix, + std::vector<util::SettingsValue>& dest) { + if (action == SET || action == SECTION_SET) { + for (int i = 0; i < 2; ++i) { + dest.push_back(value_prefix + std::to_string(++value_suffix)); + desc += " " + name_prefix + name + "=" + dest.back().get_str(); + } + } else if (action == NEGATE || action == SECTION_NEGATE) { + dest.push_back(false); + desc += " " + name_prefix + "no" + name; + } + }; + + if (force_set) { + settings.forced_settings[name] = "forced"; + desc += " " + name + "=forced"; + } + for (Action arg_action : arg_actions) { + push_values(arg_action, "a", "-", settings.command_line_options[name]); + } + for (Action conf_action : conf_actions) { + bool use_section = conf_action == SECTION_SET || conf_action == SECTION_NEGATE; + push_values(conf_action, "c", use_section ? network + "." : "", + settings.ro_config[use_section ? network : ""][name]); + } + + desc += " || "; + desc += GetSetting(settings, network, name, ignore_default_section_config, /* get_chain_name= */ false).write(); + desc += " |"; + for (const auto& s : GetSettingsList(settings, network, name, ignore_default_section_config)) { + desc += " "; + desc += s.write(); + } + desc += " |"; + if (OnlyHasDefaultSectionSetting(settings, network, name)) desc += " ignored"; + desc += "\n"; + + out_sha.Write((const unsigned char*)desc.data(), desc.size()); + if (out_file) { + BOOST_REQUIRE(fwrite(desc.data(), 1, desc.size(), out_file) == desc.size()); + } + }); + + if (out_file) { + if (fclose(out_file)) throw std::system_error(errno, std::generic_category(), "fclose failed"); + out_file = nullptr; + } + + unsigned char out_sha_bytes[CSHA256::OUTPUT_SIZE]; + out_sha.Finalize(out_sha_bytes); + std::string out_sha_hex = HexStr(std::begin(out_sha_bytes), std::end(out_sha_bytes)); + + // If check below fails, should manually dump the results with: + // + // SETTINGS_MERGE_TEST_OUT=results.txt ./test_bitcoin --run_test=settings_tests/Merge + // + // And verify diff against previous results to make sure the changes are expected. + // + // Results file is formatted like: + // + // <input> || GetSetting() | GetSettingsList() | OnlyHasDefaultSectionSetting() + BOOST_CHECK_EQUAL(out_sha_hex, "79db02d74e3e193196541b67c068b40ebd0c124a24b3ecbe9cbf7e85b1c4ba7a"); +} + +BOOST_AUTO_TEST_SUITE_END() |